Sleeve



w. H. DEFO June 24, 1947.

SLEEVE Filed-Aug. 20, 1945 7//////VV///// /////A// INVENTOR. 'william i(Defe,

ev %j/amor@ Patented June 24, 1947 UNITED STATES PATENT OFFICE SLEEVEWilliam H. Defoe, Carmi, Ill.

Application August 20, 1945, Serial No. &11,604

1 Claim.

The invention relates to a pump rod protector, and more especially to asteel sleeve for a mud pump rod.

The primary object of the invention is the provision of a protector ofthis character, wherein a mud pump rod is housed for the protectionthereof to increase the life of the same, as it eliminates difficultiesdue to crystallization and breakage, until worn out, in the continueduse of the same.

Another object of the invention is the provision oi a protector of thischaracter, wherein its Construction is novel and unique in theapplication thereof to the pump rod, it being fully protective againstundue wear and breakage, and is susceptible of easy and quickapplication and removal.

A further object of the invention is the pro- Vision of a protector ofthis character, wherein it functions to eliminate excessive wear on thecentral portion of the pump rod, as employed in drilling oil Wells orthe like, the protector being easily applied and removed with dispatch.

A still further object of the invention is the provision of a protectorof this character, which is simple in its Construction, thoroughlyreliable and ecient for the purposes intended thereof, strong, durable,it being a reinforcement to the pump rod, assuring increased lifethereto, and greater wearing qualities, and is inexpensive tomanufacture and install.

With these and other objects in View, the invention consists in thefeatures of Construction, combination and arrangement of parts as willbe hereinafter more fully described, illustrated in the accompanyingdrawing, which shows the preferred embodiment of the invention, andpointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a fragmentary vertical section View through apump casingshowing the pump rod with its protector constructed in accordance withthe invention Figure 2 is an elevation of the pump rod with theprotector shown in vertical section;

Figure 3 is a sectional View taken on the line 3-3 of Figure 2 lookingin the direction of the arrows.

Similar reference characters indicate corresponding parts throughout theseveral Views in the drawing.

Referrng to the drawing in detail, A designates generally a portion of apump casing, as used in oil well drilling, it being of the ordinary wellknown Construction, having a lateral outlet nipple lll, while providedat the uppermost end of this casing is a pump rod packing gland ll, ofany approved type. Through this gland ll works the pump rod l2, havingat its lowermost end a nut carrying tapered portion 13 for a head M, thenut being denoted at !5 for the fastening of the head in place against ashoulder l6, as provided on said rod !2.

The upper end of the rod [2 has a threaded area ll for a locking nut [8working against a Washer 19, which plays against a protective sleeve 20snugly ftted about the said rod 12 between it and the shoulder IS uponsuch rod. The sleeve 20 embraces the rod |2 and operates therewiththrough the gland H and its packing '21, so as to protect the said rodagainst wear, the latter being greatest intermediate of its length, inthe operation of the pump for oil drilling purposes.

What is claimed is:

A rod protector of the kind described, comprising a solid drill rod,threads on said rods at each of its opposite end portions, a shoulderformed integral with said rod adjacent one of its threaded end portions,a tapered portion formed integral with said shoulder and said rodintermediate said shoulder and said last mentioned threaded end portion,said tapered portion at its upper end being larger in diameter than saidrod and at its lower end of the same size as said rod, a head on saidtapered portion, a tubeform sleeve embracing the rod between theshoulder thereon and the threaded portion most remote therefrom, andmeans on the threaded portions for holding the sleeve and head fixedagainst the shoulder on said rod.

WILLIAM H. DEFOE.

REFERENCES CITED The following references are of record in the fle ofthis patent:

UNITED STATES PATENTS Number Name Date 2,164,159 Millmine June 27, 19392,042,0'78 Suhm et al. May 26, 1939 1,756,2`05 Merrick Apr. 29, 1930

